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An association between two organisms of different species in which each member benefits.

mu′tu·al·ist n.
mu′tu·al·is′tic adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.mutualist - mutually dependent
dependent - relying on or requiring a person or thing for support, supply, or what is needed; "dependent children"; "dependent on moisture"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
paschystachya with ripe fruits, absence of mutualist ants living in the trunk, and distant at least 10 m from any other fruiting C.
It also influenced his conceptualization of the La Liga Filipina, which he envisioned as a "national federation of mutualist associations" with the ultimate objective of "forming a Civil Society irrespective of the State, whichever State that might be."
The mutualist ethic of the cooperative movement collapsed by the 1960s as wider prosperity and self-fashioning prevailed, given added stimulus as New Labour shed its socialist inheritance to rebrand itself the consumer's friend in acknowledgment of the newly coined 'consumer sovereignty.'
There is a question of whether emerged females would carry conidia of a potential mutualist fungus, and in particular the saprophyte Arthrinium arundinis, from the pupa or if they would have to acquire the conidia exclusively from the plant to start the oviposition process.
Given the society's apparent socialism, it is perhaps ironic that several features lauded by progressives for their mutualist qualities were pioneered by the iron masters.
She convincingly argues that their films, frequently produced by mutualist associations, constituted a cinema of identification distinct from the exotic foreign vistas marketed to fashionable carioca moviegoers.
Monetico is the result of a partnership by two major institutions, Desjardins Group in Canada and Credit Mutuel in France, with shared cooperative and mutualist values.
Hebditch declared that the writing of anarchist and mutualist philosophers Pierre-Joseph Proudhon, Mikhail Bakunin and Peter Kropotkin represented an important, under-appreciated lineage within left-wing thought.
Bivalves are known to have a multitude of lifestyles: free-living (Morton, 1973; Lutzen & Nielsen, 2005), commensal (Goto, Hamamura, & Kato, 2007), mutualist (Mokady, Loya, & Lazar, 1998), epizoic (Villegas et al., 2005) or parasitic (Malard, 1903).
Although just 19 percent of Montanans fall into the mutualist category, 33 percent of all western U.S.
Piper (Piperaceae) has been considered a key mutualist species for fruit bats (Fleming, 1985; Thies & Kalko, 2004).
Endophytes are considered to be plant mutualist's because they receive nutrition and protection from the host plant while the host plant may benefit from enhanced competitive abilities and increased resistance to herbivores, pathogens, and various abiotic stresses (4).